Granted Patent
Utility
US 5,952,933 · App. 08/929,876
System having advanced embedded code hopping encryption and learn mode therefor
Inventors:
Darrell E. Issa, Jerry W. Birchfield, Charles Chen
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Sep 15, 1997
Inventors
Darrell E. Issa
Jerry W. Birchfield
Charles Chen
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.